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(11)

EP 2 047 356 A1

(12)

(43) Date of publication: 15.04.2009 Bulletin 2009/16 (21) Application number: 07796450.0 (22) Date of filing: 25.06.2007

(51) International Patent Classification (IPC):  G06F 3/01(2006.01) H04B 1/40(2006.01) G06F 15/02(2006.01) (86) International application number: PCT/US2007/014789 (87) International publication number: WO 2008/013628 (31.01.2008 Gazette 2008/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 27.07.2006 US 833733 P 05.12.2006 US 633834 (71) Applicant: Microsoft Corporation Redmond, WA 98052-6399 (US)	(72) Inventors: TEEGAN, Hugh A. Redmond, Washington 98052-6399 (US) SAWHNEY, Ishdeep S. Redmond, Washington 98052-6399 (US) CHANG, Eric I. Redmond, Washington 98052-6399 (US) (74) Representative: Goddar, Heinz J.  Forrester & Boehmert Pettenkoferstrasse 20-22 80336 München 80336 München (DE)